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distance modulus

noun

  1. astronomy a measure of the distance, r , of a celestial object too far away to show measurable parallax. It is given by m M = 5 log( r /10), where m is its apparent magnitude (corrected for interstellar absorption) and M is its absolute magnitude
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Example Sentences

For our adopted distance modulus and foreground reddening, this implies that any source at the position of AT 2017gfo must have an absolute magnitude F606W > −5.8.

From Nature

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